139150440 has 512 divisors, whose sum is σ = 587865600. Its totient is φ = 28753920.

The previous prime is 139150399. The next prime is 139150441. The reversal of 139150440 is 44051931.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139150441) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2625454 + ... + 2625506.

It is an arithmetic number, because the mean of its divisors is an integer number (1148175).

Almost surely, 2^139150440 is an apocalyptic number.

139150440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139150440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293932800).

139150440 is an abundant number, since it is smaller than the sum of its proper divisors (448715160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139150440 is a wasteful number, since it uses less digits than its factorization.

139150440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 139150440 is about 11796.2044743214. The cubic root of 139150440 is about 518.1969605245.

The spelling of 139150440 in words is "one hundred thirty-nine million, one hundred fifty thousand, four hundred forty".